Three-Phase Transformer for Power Transmission
Three-phase power transformers are of a prime position in energy distribution networks in power systems that require efficient distribution capacity and high-power transmission capabilities. At higher power ratings, three-phase transformers are less expensive, lighter, and smaller since they use less wiring compared to three single-phase transformer types. They are ideal for industrial equipment and offer many benefits for multiple applications.
Challenges of Modeling Three-Phase Transformers
The design of transformer systems is a challenging endeavor, especially for high-power applications. During the design process, the following aspects need to be taken into consideration:
- Steady-state and transient magnetic analyses
- Winding configurations and connections (delta or star)
- Compute winding properties (AC and DC resistance and inductances, etc.)
- Open and short circuit tests
- Extracting the transformer equivalent circuit
- Core design and material investigation
- Electromagnetic loss calculation (hysteresis, eddy, and winding loss)
- Heat distribution and mechanical deformation
- Electric field analysis and insulation failures
EMWorks Solution for Transformer Power Systems
Transformer maintenance and repair is expensive. Therefore, the simulation and validation of all performance aspects of a transformer can save your money, time, and effort.
From geometry modeling to finite element simulation of its electromagnetic behavior, EMWorks tools provide a full solution for transformer devices:
TransformerWizard: is an EMWorks 3D CAD tool for transformer designs, fully integrated inside your CAD platform and allows you to get, with few clicks, various pre-defined transformer templates for single and three-phase configurations.
Electromagnetic simulation: The popular 2D and 3D low-frequency software packages from EMWorks, EMS and EMWorks2D, are the preferred simulation platforms for many transformer designers and manufacturers; they addresses all aspects of a transformer design allowing an accurate and efficient computation of electromagnetic fields and multi-physics analysis.
The figures below show some of the obtained 2D and 3D results of a three-phase transformer design:
On Load Circuit with Resistive Load -∆Y Transformer Connection
Magnetic Flux Density Animation Versus Phase
Current Curves Versus Time
Total Core Loss Curve
Steady State Temperature Distribution Across the Transformer
Core Deformation under EM and Thermal Load Effects
Conclusion
Three-phase transformers stand as pivotal components in the realm of power transmission, offering a blend of efficiency, cost-effectiveness, and compact design vital for high-power distribution networks. The design journey of these transformers entails intricate considerations from magnetic analyses to heat distribution challenges. EMWorks' suite of tools, from TransformerWizard to EMS and EMWorks2D, provides an integrated solution, streamlining the design process and addressing the multifaceted aspects of transformer design, ensuring reliability and performance in power systems.
